Friction-clutch.



No. 881,215 .PATENTED SEPT. 18,1906. J'. w. GHALLONER.

' FRICTION CLUTCH. APPLICATION FILED JULY31, 1905.

2 SHEETS-SHEET 1.

' Suvanfoz I atl o'cnmax NORRIS UNITED I STATES PAEENT OFFICE.

Specification of Letters Patent.

Patented Sept. 18, 1906.

Application filed July 31, 1905. Serial No. 272,090.

To all whom, it may concern."

Be it known that LJOHN W. OHALLONER,

a citizen of the United States, residing at. the city of Oshkosh, in thecounty of Winnebago and State of Wisconsin, have invented new and usefulImprovements in F riction- Clutches, .of which the following is aspecifica- 'tion.

This invention relates to improvements in friction-clutches, andparticularly to a friction-clutch adapted to the operation of asawmill-carriage, shingle-machine carriage, and the like, or any devicerequiring reclprocal movement.

shoe.

The object of the invention is the provision of means for facilitatingthe operation of a clutch requiring reciprocal movement.

With this and other objects in view the in-.

vention consists of certain other novel. constructions, combinations,and arrangements of parts, as will be hereinafter fully described andclaimed.

with the side of the boxremoved. Fig. 4 is:

a perspective view of the box, shoe, and cooperating parts for actuatingsaid shoe. Fig.

5 is a Vertical longitudinal sectional View of the box of the shoe,showing the crank-arm and a portion of the rocker-arm in side elevation.Fig. 6 is ,a perspective view of the Fig. 7' a perspective view of thecrank-arm. V I

Referringfto the drawings, 2 designates a machine-frame, and 3 thecarriage. The carriage 3 slides on usual ways or tracks 4 of themachineframe 2.. Power is applied to the pulley 5, which. drives thepulley 6 upon the same shaft: An endless belt 7 is mounted up on andisdriven by the pulley 6 beneath the roller 8 and around theidler-pulley 9. The

tension of thebelt is regulated by means of, the bolt .10, set in thesliding pulley-frame 12 and passing through an eye in the lug 13. Thebolt 10 carries a nut 11. By adjusting the nut the tension of the beltis regulated.

A box 14 is fixedly secured to the carriage 3, and within said box ashoe 15 is positioned.

The box is open at both ends and the belt 7 passes through the box aboveand below said shoe 15, Figs. 1, 3, and 4. The shoe 15 is operatedupwardly or downwardly against the belt 7 by means hereinafterdescribed. The shoe when sufficiently so operated presses the belteither against the top or bottom of the box, thereby applying thefriction to both the outer and inner surfaces of the belt. It will beunderstood that the top portion of the belt is always travelingoppositely to the bottom portion. Therefore reciprocation of thecarriage is effected whenever the pressure of i the shoe is changed.

The shoe 15 and the box 14 are preferably of the same shape, which is inthe present instance rectangular. The shoe 15 is operated by the lever16, pivoted to the carriage 3 at 17 ,and connected by means of a link 18with a rocker-arm 19, which is fixedly secured to shaft 20. The shaft 20is ournaled in the sides of the box 14. An arm 21, constituting a crank,is fixedly mounted upon shaft 20, Fig. 5, and loosely incloses the shaftor pin 22, which shaft 20 is journaled in the sides of the shoe 15. Theoperation of the lever 16 rocks the shaft 20, and by means of the crank21 raises and lowers the shoe and confines the belt between the shoe 15and the top or bottom of the box 14 sufficiently to apply the frictionin any degree desired. This upward-and-downward movement, ihereinbeforereferred to, is therefore caused by automatically or manually swingingthe rocker-arm 19, thereby rocking shaft 20. The belt 7 then carries thebox 14, and the carriage 3 attached thereto, at a speed corresponding tothe friction applied. The lever 16 is operated longitudinally forwardand backward, and the power-pulley 5 is revolved in the properdirection, so as to impart a forward movement to the carriage 3, andlikewise a backward pull upon the lever 16 will apply the friction tomove the carriage 3 backward. When the pressure either way is removedfrom the lever 16, the spring 23, pressing against the upper end of therocker-arm 19,will throw the shoe out of contact, thereby placing saidrocker-arm, preferably, in a vertical position.

The double-headed pin 24 passes loosely through an eye in the end of therocker-arm 19, and said pin 24 upon each side of rockerarm 19 issurrounded by a coil-spring 24. 1 The arms 26, carried by the frame 2,serve as stops to stop and reverse the movement of the carriage. Whenthe pin 24 strikes against the stop 26, one of the springs 24 is firstcom pressed, forming a cushion until sufficient pressure is applied tooperate the rockerarm 19 and rock the shaft 20, causing the shoe 15 topress upon the belt for reversing the movement of the machine. Anautomatic safety-reverse is in this manner provided. Shoulder-bars 27are carried by the ends of the shoe 15, Fig. 5, which bars constituteguiding means. These bars 27 travel up and down against the edges of box14 to insure parallel movement of the shoe 15. In the drawings the saidbars 27 are preferably attached by screws 28.

What I claim is 1. In a friction-clutch, the combination with an endlessbelt, of a shoe interposed be tween the sides of said belt, a boxentirely inclosing said shoe and belt, and means for bodily moving saidshoe within said box against either surface of the belt.

2. In a friction-clutch, the combination with an endless belt, of a shoeinterposed between the sides of said belt, a box entirely inclosing saidshoe and belt, a shaft ournaled within said box, a crank-arm fixed tosaid shaft and shoe, and means for rocking said shaffland therebyvertically moving said shoe.

3. In a friction-clutch, the combination with an endless belt, of a shoeinterposed between the sides of said belt, a box inclosing said shoe andthrough which the belt passes, a shaft journaled Within said box, acrank-arm fixed to said shaft, a pin extending through said crank-armand positioned within said shoe, and means for rocking said shaft.

4. In a friction-clutch, the combination with an endless belt, of a shoeinterposed between the sides of said belt, a box inclosing said shoe andthrough which box the belt passes, a rock-shaft j'ournaled within thebox, a crank-arm fixed to said shaft, a pin extending through saidcrank-arm and secured to said shoe, a rocker-bar fixed to saidrockshaft, a lever connected to the lower end of said rocker-bar, andstops arranged at proper distances to engage the upper end of saidrocker-bar.

5. In a machine of the class described, the combination with a frame,tracks carried by said frame, a carriage engaging said tracks, of a boxattached to said carriage, a shoe within said box, an endless beltpassing through said box above and below said shoe, and means forpressing said shoe upwardly or downwardly against the surface of saidbelt.

6. In a machine of the class described, the combination with a frame,tracks carried by said frame, a carriage engaging said tracks, of a boxattached to'said carriage, a shoe positioned within said box, an endlessbelt pass ing through the box above and below said shoe, and means forvertically moving said shoe against the surface of said belt.

7. In a machine of the class described, the combination with a support,a traveling carriage carried by said support, of a box secured to saidcarriage, an endless, solid belt passing through said box, a shoe withinsaid box and positioned between the sides of said belt, and

. means for pressing said shoe against said belt for reversing movementof said carriage.

8. In a machine of the class described, the combination'with a frame, acarriage carried by said frame, of means for reversing movement of saidcarriage, stops carried by said frame and positioned in the path ofmovement of said reversing means, and means for controlling movement ofsaid reversing means.

9. In a machine of the class described, the combination with a carriage,of a hollow box fixed to said carriage, a hollow shoe positioned withinsaid box, an endless belt passing through said box and positionedbetween said shoe and box, and means for pressing said shoe against theinner surface of said belt for reversing movement of said carriage.

10. In a machine of the class described, the combination with a frame,of a traveling carriage carried b said frame, an endless belt carried bysai frame, means fixed to said carriage and normally engaging said beltfor reversmg the movement of said carriage, and manually-operated meansfor controlling movement of said reversing means, comprising asubstantially horizontal lever pivotally mounted upon said carriage, anda horizontal link pivotally connected to said lever and to saidreversing means.

1 1. In a machine of the class described, the combination with a frame,of a traveling carriage carried lily said frame, an endless belt carriedby sai frame, reversing means carried by said carriage and cooperatingwith said belt, and tensioning means for said belt, said tensioningmeans comprising a lug formed upon said frame, a pulley-frame providedWith a threaded bolt, said bolt extending through said lug, a revolublemember carried by said bolt and normall engagcausing said shoe to pressagainst said belt.

13. Inamachine of the class described, the pin, and stops carried bysaid frame and combination with a frame, a traveling caradapted to beengaged by said pin for pivotriage carried by said frame, an endlessbelt ing said rocker-bar upon said box for moving carried by said frame,a box inolosing said said shoe.

5 belt and fixed to said carriage, a shoe posi In testimony whereofI'affix my signature I5 tioned Within said box and adapted-to press inpresence of tWo subscribing Witnesses. against said belt for reversingmovement of I JOHN W. CHALLONER. said carriage, a rocker-bar connectedto said Witnesses: shoe, a pin loosely mounted upon said rocker- A. R.WATERHOUSE,

to bar, cushioning means positioned upon said WM. B. STIQKNEY.

